Circle Unveils Arc Mainnet with Heavyweight Validators

Circle has launched its Arc Mainnet, a high-grade institutional settlement layer that positions itself as a core operating system for onchain financial activity. The network integrates Circle Payments Network, StableFX, tokenized funds, lending markets, and major trading venues.

The launch brings together a heavyweight roster of founding validators including BlackRock, DTCC, Intercontinental Exchange, Mastercard, Standard Chartered, and Visa. More than 100 institutions and ecosystem builders are already live or exploring the network.

Circle minted 10 billion ARC tokens at Arc Mainnet genesis, but stressed that the token is not yet public and will evolve alongside a planned shift to proof of stake in 2027.

Arc Mainnet offers sub-second finality, predictable fees paid in USDC, and configurable privacy designed for regulated financial environments. Circle's CEO Jeremy Allaire called the debut 'the most consequential major platform launch' in the company's history.